Transform tough lamb shanks into a restaurant-quality meal with slow-roasted garlic

Lamb shanks with roasted garlic sauce | celeriac purée | broccolini · 10:31 · Video: Adam Ragusea · Watch at the source

In short: Lamb shanks are notoriously tough, but slow roasting turns them into tender, succulent meat. By pairing them with a silky celeriac purée and a rich, garlic-infused pan sauce, you elevate a humble cut into a sophisticated dinner. The secret lies in patience, steam, and the perfect finishing crisp.

The process begins by browning four lamb shanks alongside whole heads of garlic under a broiler. Once seared, the tray is sealed tightly with foil to trap moisture, allowing the meat to cook slowly at 285ºF/140ºC. This low-temperature environment is essential for breaking down connective tissues until the meat pulls away from the bone with minimal effort, a process that typically requires about four hours of roasting time.

While the lamb transforms, prepare the celeriac purée by softening peeled celery root in butter before simmering it in milk. Although the milk may curdle during this stage, it does not affect the final quality. Once tender, the mixture is processed until smooth, seasoned with salt, cayenne, and a splash of lemon juice to prevent discoloration. This purée can be prepared in advance and reheated easily.

The final sauce is built from the rendered juices left in the roasting tray. After discarding the excess fat, the softened garlic is squeezed from its skins and mashed into the pan. Deglazing with reserved cooking liquid or wine creates a flavorful base, which is then enriched with cold butter for a glossy finish. A final five-minute blast at 400ºF/200ºC crisps the lamb exterior, ensuring a perfect contrast of textures before serving alongside steamed broccolini.

This method highlights the importance of managing moisture and fat. By reserving the liquid from the celeriac to deglaze the lamb pan, you create a cohesive flavor profile across the entire dish. The use of lemon juice serves a dual purpose: it brightens the heavy, savory notes of the lamb and garlic while maintaining the aesthetic appeal of the root vegetable purée.

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